Can someone please help me I have Windows 10, PS CC 2019
Here is a link for Troubleshooting problems with Adobe Exchange extensions etc. I've found this very helpful in the past and I hope it helps you.
"Then it says to uninstall it and I have no clue where it is. The only way for me to uninstall it is to do it through the exchange but that is not working."
Julie - do you mean the uninstall/install button is not working on your Exchange page? ....... or is the page not working?
To uninstall your extension you need to go to your Exchange page, that is where you'll find your extension.
Close all Adobe applications and reinstall your extension.
Next to the extension there should be an Uninstall button to remove the extension. Wait for the button to change to install and click to reinstall the extension.
Hopefully someone can help you with this issue. I've found another link for Add-on problems
Extensions can be auto-install or manual, depending on how the developer sets them up. There should be instructions on the website and a link to manually download.